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參數(shù)資料
| 型號(hào)： | MAX888ECJ |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | Wireless and Satellite Handset Power-Management ICs |
| 中文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PQFP32 |
| 封裝： | 7 X 7 MM, 1.40 MM HEIGHT, TQFP-32 |
| 文件頁數(shù)： | 12/20頁 |
| 文件大小： | 257K |
| 代理商： | MAX888ECJ |
Wireless and S atellite Handset
Power-Management ICs
12
______________________________________________________________________________________
Detailed Desc ription
The MAX886/MAX888 contain one high-efficiency, step-
down DC-DC converter, four low-dropout linear regula-
tors, and one regulated charge pump. The output
voltages of the switching regulator and the linear regula-
tors are software-programmable through the serial inter-
face. The regulated charge-pump output is factory set
at 5.25V. The devices also include reset and start-up
timers and a low-battery detect comparator (Figure 3).
500mA DC-DC Buc k Regulator 0
Regulator 0 is a low-noise, step-down, synchronous
DC-DC converter that can source a minimum of
500mA. High operating frequency (up to 925kHz) mini-
mizes output voltage ripple and reduces the size and
cost of external components. Guaranteed 100% duty-
cycle operation provides the lowest possible dropout
voltage, extending the useful life of the battery supply.
5
IN1
OUT1
IN2
OUT2
IN3
OUT3
IN5
OUT5
CVH
CVL
IN0
BATT
OUT0
C+
C-
PGND
IN4
OUT4
ONSTAT
LBO
ON1
ON2
ON5
ON0
LX
ON4
SDA
SCL
SYNC
RESET
ON
OFF
LBI
REF
LBHYS
DGND
LOGIC
DECODER
RESET AND
START UP
TIMER
REG4
CHARGE
PUMP
REGULATOR
OSCILLATOR
SWITCHING
REGULATOR
LINEAR
REG1
LINEAR
REG5
REF
DAC5
DAC2
DAC1
LINEAR
REG2
DAC3
LINEAR
REG3
OUT2
10k
+
GND
ON2
Figure 3. Functional Diagram
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX8890EGCAAA | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX8890EGCABK | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX8890EGCAKM | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX8890EGCBBB | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX8890EGCBKK | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
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